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# 8  
Old 10-06-2008
Quote:
Originally Posted by cfajohnson

Or. with bash or ksh93:
Code:
string=${string// /%20}

If your shell support parameter expansion this is the best solution.
# 9  
Old 10-06-2008
Quote:
Originally Posted by danmero
Code:
string=${string// /%20}

If your shell support parameter expansion this is the best solution.

Not necessarily.

Writing a portable script may be more important than writing the most efficient one.
# 10  
Old 10-06-2008
Quote:
Originally Posted by cfajohnson

Not necessarily.

Writing a portable script may be more important than writing the most efficient one.
Hey cfa!

Code:
string=${string// /%20}

This ended up working in Mac OS X but not in ubuntu hardy, I was getting an error so I ended up using vid's solution:

Code:
series_name=`echo "$series_name"|sed 's/ /%20/g'`

This works just fine on ubuntu hardy.

Do you know a lot about sed? I used vid's solution for extracting a number in between <seriesid></seriesid> in an xml file and it worked fine in Mac OS X but when I tried it in ubuntu hardy the output is blank, no number, nothing.

mind taking a look? Here is the sample XML

Code:
<Data>
−
<Series>
<seriesid>73545</seriesid>
<language>en</language>
<SeriesName>Battlestar Galactica (2003)</SeriesName>
<banner>graphical/73545-g11.jpg</banner>
−
<Overview>blah blah blah blah</Overview>
<FirstAired>2003-12-01</FirstAired>
<IMDB_ID>tt0407362</IMDB_ID>
<zap2it_id>SH710749</zap2it_id>
<id>73545</id>
</Series>
</Data>

and here is the solution given to me by vid to extract "73545" and set it to a variable

Code:
variable=`sed -ne 's/\(^\<seriesid\>\)\(.*\)\(\<\/seriesid\>\)/\2/p' filename|head -1`

# 11  
Old 10-06-2008
Quote:
Originally Posted by cfajohnson

Writing a portable script may be more important than writing the most efficient one.
If you can give me the definition of portable maybe I'll reevaluate my concept's of efficiency Smilie
# 12  
Old 10-07-2008
Quote:
Originally Posted by tret
Code:
string=${string// /%20}

This ended up working in Mac OS X but not in ubuntu hardy, I was getting an error so I ended up using vid's solution:

Code:
series_name=`echo "$series_name"|sed 's/ /%20/g'`

This works just fine on ubuntu hardy.

It will work on Ubuntu if you specify that it is to be executed by bash. Use a shebang as the very first line of the file:
Code:
#!/bin/bash

(Check that bash is indeed in /bin.)
Quote:

Do you know a lot about sed?

I avoid sed for anything beyond a simple search and replace. You get much more understandable (and thus easier-to-debug) code with awk.
Quote:
mind taking a look? Here is the sample XML

Code:
<Data>
−
<Series>
<seriesid>73545</seriesid>
<language>en</language>
<SeriesName>Battlestar Galactica (2003)</SeriesName>
...
</Data>

and here is the solution given to me by vid to extract "73545" and set it to a variable

Code:
variable=`sed -ne 's/\(^\<seriesid\>\)\(.*\)\(\<\/seriesid\>\)/\2/p' filename|head -1`


Code:
awk -F '[<>]' '/^<seriesid>/ { print $3 }' filename

# 13  
Old 10-07-2008
Quote:
Originally Posted by danmero
If you can give me the definition of portable maybe I'll reevaluate my concept's of efficiency Smilie

A portable script will run on any modern (i.e., POSIX) system. That means using only POSIX shell syntax and features and standard POSIX/Unix commands.
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